Light and auxin signaling cross-talk programme root development in plants

ABSTRACT

Root development in plants is affected by light and phytohormones. Different ranges of light wavelength influence rootpatterning in a particular manner. Red and white light promote overall root development, whereas blue light has bothpositive as well as negative role in these processes. Light-mediated root development primarily occurs through modulationof synthesis, signaling and transport of the phytohormone auxin. Auxin has been shown to play a critical role in rootdevelopment. It is being well-understood that components of light and auxin signaling cross-talk with each other. However,the signaling network that can modulate the root development is an intense area of research. Currently, limited informationis available about the interaction of these two signaling pathways. This review not only summarizes the current findings onhow different quality and quantity of light affect various aspects of root development but also present the role of auxin inthese developmental aspects starting from lower to higher plants.